package com.itheima.common;

import lombok.Data;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;

/**
 *  统一结果返回对象
 */
@Data
public class R<T> implements Serializable {

    private Integer code;

    private String msg;

    private T data;

    private Map map = new HashMap(); //动态数据


    public R() {
    }

    public R(Integer code, String msg, T data) {
        this.code = code;
        this.msg = msg;
        this.data = data;
    }

    public R(Integer code, String msg, T data, Map map) {
        this.code = code;
        this.msg = msg;
        this.data = data;
        this.map = map;
    }

    public static <T> R<T> success(String msg, T object) {
        R<T> r = new R<T>();
        r.msg = msg;
        r.data = object;
        r.code = 1;
        return r;
    }

    public static <T> R<T> error(String msg) {
        R r = new R();
        r.msg = msg;
        r.code = 0;
        return r;
    }

    public R<T> add(String key, Object value) {
        this.map.put(key, value);
        return this;
    }
}
